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(No Model.) '4 shets-shmj 1. I P.MEDART. MACHINE FOR STRAIGHTENING ANDPOLISHING SHAFTING; & e.

Patented Nov. 30,1897.

(No Model.) 4 Sheets-Sheet 2.

. P.MEDART. MACHINE-FOR STRAIGHTENING AND POLISHING SHAFTING, 8m.

Patented Nov. 30, 1897.

U- W m (No Model.) 4 Sheets-Sheet 3.

P.-MEDART MACHINE FOR STRA IGHTENING AND POLISHING SHAFTING, 660. N0.594;482. Patented NOV. 30, 1897.

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(No Model.) I v 4 4 SheetsSheet 4.

P. MEDART. MACHINE FOR STRAIGHTENING AND POLISHING SHAFTI'NG, 6:0. Q No.594,482.

Patented Nov, 30, 1,897.

Mrs ITATES PHILIP MEDART, OF ST. LOUIS, MISSOURI, ASSIGNOR OF ONE-HALFTO WILLIAM MEDART, OF SAME PLACE.

MACHINE FOR STRAIGHTENINGQAND POLISHINIGISHAFTING, &c.

SPECIFICATION forming part of Letters Patent NO. 594,482, dated November30, 1897. Appucaam med, June 24,1897. at; No. 642,189. (No model.)

in Machines for Straightening and Polishing is a specification.

My present invention involves certain improvements on the machine shownin my Patent No. 558,591, of April 21, 1896.- In that patent I haveshown a machine adapted to Shafting, Tubes, 850., of which the followingstraighten and polish metal rods, tubes, &c.,

in which the article to be straightened is passed between rolls andguides interposed between the rolls. In said patent only two rolls areemployed for both feeding and straightening the article. One of therolls is concave and the other is straight or slightly convex. The rollsare positively driven and the guides shown are in the form of bars, oneof which is arranged above and the other below the article operated uponby the machine.

The upper guide shown in the patent may be adjusted vertically and alsotransversely in a horizontal plane, and the lower guide may also beadjusted vertically and in a horizon tal plane; but the guides shown inmy aforesaid patent are not so constructed,arranged, and operated as tofulfil the requirements for all classes of work.

According to my present invention. I construct, mount, and operate thestraightening and feeding rolls in substantially thesame way as thatshown in my aforesaid patent. I employ an upper guide of an improvedconstruction and which is so arranged that'it may be adjusted verticallyindependently at each opposite end, may be adjusted transversely to theaxes of the rolls in a horizontal plane, and may also have a pivotaladjustment about a vertical pivots The lower guide is also arranged-tobe adjusted horizontally by independent adjusting devices at oppositeends, and it has independent devices for adjusting it vertically atopposite ends. In order to strengthen the frame of the machine, I employbars which connect the vertical end pieces of the frame firmly together,and these bars constitute supports forthe upper guide.

Fig. 8 is a plan view thereof.

I As it is sometimes necessary to pass shafts, 850., through the machinemore than once to make them perfectly true, I attach to the improvedmachine means for testing the shafts, &c., as they emerge from themachine. This mechanism consists of a series of rollers arranged onhorizontal axes onto which the shafts are fed as they emerge from themachine and a series of live or power-driven rollers arranged in pairsto which the shaft may be transferred from the first-mentionedrollers'and by means of which they may be tested.

In the accompanying drawings, Figure 1 shows a plan view of a machineembodying my improvements. Fig. 2 shows a longitudinal section on theline 2 2 of Fig. 1. Fig. 3 shows an end elevation. Fig. 4 shows a detailplan View of the mechanism for adj usting the lower guide. Fig. 5 showsa further detail of the lower guide. Fig. 6 is a perspective view,partly in section, of the upper guide. Fig. 7 is an elevation showingthe testing apparatus applied to the machine. Fig.9 is a view of onemember of the upper guide. Figs. 10 and 11 are views of another memberthereof, and Figs. 12 and 13 are viewsof the third member. Fig. 14 is atransverse section on the line 14 14 of Figf'ig I v The straighteningand polishing rolls X andY are mounted in suitable bearings above thebed-plate in substantially the same way as that shown and described inmy patent before mentioned. The mechanism for actuating and adjustingthe rolls is also substantially the same as that of my prior machine andneed not herein be described.

The lower guide comprises a guide-block A, a holder B, in which it ismounted, and a frame 0, in which the frame is supported. The block A maybe of any suitable form and construction. It is secured, preferably, bya dovetail connection with recesses in the top of the holder B, and thisholder is arranged in vertical guides c in the supporting-frame G. Theframe is arranged on the bed-plate under the rolls X and Y, and it isprovided with lugs D at opposite ends, into which extend screws E, thatare oppositely screwthreaded at their opposite ends and extend throughlugs F, rising from the bed-plate. By this arrangement the frame 0 maybe adjusted transversely to the axes of the rolls X and Y, and, ifnecessary, one end may be adjusted more than the other, and for thispurpose the lugs D and F are arranged on pivots. \Vedges G extend underthe supports B be tween the guides 0. These wedges are pivotallyconnected at g with screws ll, operated by hand-wheels I. Each wedgemaybe independently operated and may be employed to elevate or depressthe lower guide to the desired extent at either end.

The frame of the improved machine is pro vided with heavy frame-piecesK, rising from the bed-plate above the plane of the rolls X and Y, andthese frame-pieces are connected by heavy bars or bolts L. Theframe-pieces are each provided with a cap M, secured in place by shortbolts N, and the bars L are screw-threaded at opposite ends and providedwith nuts Z. These bars L not only serve to strengthen and stiffen theframe, but also constitute supports and guides for the upper guide 0.The guide-block P of the upper guide may be made of any suitablematerial, and it is arranged in a recess q in a blockholder Q. (Shown indetail in Figs. 12 and 13.) This holder is arranged within the twomembers It and S of the housing, which latter members are shown indetail in Figs. 9, l0, and 11. The member R is pivotally connected by acentral pivot v with a cross-bar T, supported on the bars L. Thecross-piece is provided with semicircular ends 1, arranged under thebars L, and caps '15 extend over the. bars L and are bolted to the endpieces 1. \Vhen these bolts are tightened, the crosspiece is heldrigidly in place. 3y loosening the bolts the cross-piece may be adjustedlongitudinally 011 the bars. The cross-piece supports ad j usting-screws U, which have a balland-socket connection a at their lower endswith the guide-block holder Q. By means of these screws the guide-blockmay be adjusted vertically to any desired extent at either end.

In order to adjust the upper guide longitudinally of the bars L ortransversely to the axes of the rolls X and Y, I employoppositely-screw-threaded rods V, operating in nuts \V on the frame andhaving ball-andsocket connections 1; with the housing of the upperguide. The housing-sections R and S are bolted together at r ands andthey interlock at 0' and s, as indicated. The space within the sections,however, is sufficient to permit the holder Q. to be freely adjusted.The arrangement, it will be observed, is such that the guide-block maybe adjusted not only vertically and horizontally but vertically andhorizontally independently at opposite ends, and it may be adjustedabout a central vertical pivot to give it the desired positionrelatively to the shaft. Thisis often necessary, as the shaft in passingthrough the rolls is forced out of line to some extent, according to theangle at which the rolls are arranged. By making the housing in sections one part may be removed and the guide replaced conveniently. Thisis an advantage, as it is necessary in straightening bars, &c., ofvarious diameters. The devices employed for adjusting the various partsalso act as secure braces to hold the partsin their adjusted positions.By adjusting the parts independently at opposite ends proper allowancesmay be made for unequal wear.

It will be observed that the upper guide is supported entirely on therods L. 13y removing the caps T the cross-bar and the up per guide maybe removed and the rolls may be repaired or removed conveniently. It isoften necessary to employ different sets of rolls for different kinds ofwork, and the constrnction of the machine is such as to facilitate thechanging of the rolls.

It is necessary sometimes to put shafts, &c., through the machine asecond time to straighten them accurately. To determine whether this isnecessary, I provide the testing devices shown particularly in Figs. 7and 8. The shaft, straightened. by the rolls X and Y, passes from themachine onto the rollers (1, arranged on horizontal pivots and mountedin standards 0/. In close proximity to the rollers a are live rollers7). These rollers are arranged in frames 11, mounted on standards b Eachstandard supports one pair of rollers, and their peripheries arearranged but a short distance apart. These rollers are positively drivenby gearing d, operated from a shaft d, connected with the main gearingof the machine. \Vhen the shaft or the like is delivered from themachine to the rollers a, it may he lifted from these rollers onto therollers I). If the shaft is perfectly true, it will be rotated uniformlyfrom end to end. If it be crooked or untrue, it will wabble and willtherefore have to be passed through the straightening-rollers a secondtime.

I claim as my invention-- 1. The combination with thestraighteningrolls, of an upper guide, a lower guide-block, a holder inwhich it is mounted, a supporting-frame having vertical guides for theholder, wedges arranged in said frame under the holder, screws formoving the wedges independently, and screws connected to the bed-plateof the machine and to the supporting-frame for independently adjustingthe frame at opposite ends.

2. The combination of the straighteningrolls, the upper guide pivoted ona central, vertically-arranged pivot, and means for ad justing the guideabout its pivot.

3. The combination with the straighteningrolls, of the upper guide, acentral pivot therefor, means for adjusting the guide about its pivot,independent means for adjusting the opposite ends of the guidevertically, and other means for adjusting the guide transversely to theaxes of the rolls.

4:. The combination with the straighteningrolls, of the upperguide-block, its holder, the housing in which the holder is mounted, acentral pivot for the housing, screws extending through the housing andinto sockets in the holder, and means for adjusting the housing aboutits central pivot.

5. The combination of the straighteningrolls, the frame of themachine,the cross-bar secured thereto, the housing pivotally connected with thecross-bar, the guide-block, its holder arranged within the housing, andmeans for adjusting both the housing and the holder.

- 6. The combination of the straighteningrolls, the main frame of themachine, the horizontal bars, or bolts above the plane of thestraightening-rolls, the cross-bar removably secured to these bars, andadjustable longitudinally thereon, and the upper guide connected withand supported by said crossbar.

7. The combination of the straighteningrolls, the main frame having thevertical end pieces, the bars connecting the end pieces 'livered fromthe straightening mechanism,

and the positively-driven rolls arranged in pairs and having theirperipheries in close proximity adapted to receive said shaft, 850.,

and to rotate and test it, substantially as set forth. f

In testimony whereof I have hereunto subscribed my name.

' PHILIP MEDART.

WVitnesses:

E. V. HARMAN, THos. T. FAUNTLEROY.

